html{
    background-color: #CCCCCC;
}
*{
    margin: 0;
    padding: 0;
}

/* data数据所在显示 表格 */
#app{
    width: 600px;
    margin: auto;
}
table{
    width: 600px;
}
#top_1{
    height: 50px;
    background-color: rgba(47, 47, 47, 0.98);
    line-height: 50px;
    color:yellow;
    display: flex;
    justify-content: center;
    align-items: center;
}

#btn{
    height: 50px;
    background-color: rgba(47, 47, 47, 0.98);
    line-height: 50px;
    color:yellow;
    display: flex;
    justify-content: center;
    align-items: center;
}
#btn button{
    width: 100px;
    height: 40px;
    border-radius: 5px;
}

/* 分页ul */
ul{
    display: flex;
    width: 600px;
}
ul li{
    list-style: none;
    flex: 1;
    text-align: center;
    border: 1px solid #000;
    border-radius: 5px;
}
/* 添加高亮效果 */
.active{
    background: red;
    color:#fff;
}

/* 小图标 */
/* 正序 */
.asc{
    width: 10px;
    height: 10px;
    transform: rotate(90deg);
    display: inline-block;
    background: url("1.png");
    background-size: cover;
}

/* 返序 */
.desc{
    width: 10px;
    height: 10px;
    transform: rotate(-90deg);
    display: inline-block;
    background: url("1.png");
    background-size: cover;
}

/* 遮罩层 - 模态框 */
.mask{
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0px;
    top: 0px;
    z-index: 1;
    background-color:rgba(0, 0, 0, .5);
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 对话框 */
.dialog{
    width: 400px;
    height: 400px;
    background-color:#fff;
}